Jessica "Jessie" McKay (born 23 June 1989) is an Australian professional wrestler currently signed to WWE under the ring name Billie Kay, performing on their developmental territory NXT.

In June 2007, Kay made her professional wrestling debut at Pro Wrestling Alliance (PWA), and she debuted one-year later for the Pro Wrestling Women's Alliance promotion, where she became a two-time PWWA Champion.

She later started competing on the independent circuit with multiple promotions at the United States for several years, most notably and commonly for Shimmer Women Athletes.